Old images of Prince's great-grandfather do show they have a striking resemblance.

The children are all olive-skinned and do have facial similarities to Michael and other members of his family.

Fans have also shared close-up images of Prince, which reveal patches of white skin on his hands and under his arms caused by vitiligo, the skin condition Michael claims changed his appearance so dramatically.

But, dermatologists have said that a person with vitiligo is unlikely to pass on one specific gene to their children that would cause them to develop the condition.

Sources once claimed to TMZ that the surrogate who carried Blanket had no idea the father of the unborn child was the King of Pop.

Michael's lawyer is said to have picked the baby up from the hospital and delivered him to Michael.

There are also rumours that a Mexican nurse named Helena is the biological mother of Blanket.

And during the wrongful death lawsuit Michael's family pursued after his passing at the age of 50, it's said that Michael's mother Katherine prevented the court from hearing evidence on the conception of his children.

Macaulay Culkin is the real biological father of Paris

Michael had a famously close friendship with Home Alone child star Macaulay Culkin, who has regularly spoken out to defend him against abuse allegations.